<!DOCTYPE  html>
<html>
<head>
    <link rel="stylesheet" href="dingweidaohang.css">
    <script type="text/javascript" src="dingweidaohang.js"></script>
</head>
<body>
<div id="daohang">
    <ul>
        <li ><a href="javascript:" id="oner" onclick="clickone()">one</a></li>
        <li ><a href="javascript:" id="twor" onclick="clicktwo()">two</a></li>
        <li ><a href="javascript:" id="threer" onclick="clickthree()">three</a></li>
    </ul>

</div>
<div id="one">one</div>
<div id="two"><button value="button" id="get" style="width: 100px" onclick="on()"></button>two</div>
<div id="three">three</div>
<script>
    var out1 = document.getElementById("one");
    var out2 = document.getElementById("two");
    var out3 = document.getElementById("three");
    out1.style.height = window.screen.height  + "px";
    out2.style.height = window.screen.height  + "px";
    out3.style.height = window.screen.height  + "px";
</script>
</body>
</html>